Application of Complexity of Element Method in Geochemical Anomaly Studying and Metallogenic Prediction in the Dunbasitao Gold Mine,Qinghe County,Xinjiang
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摘要: 异常提取是地球化学勘查中的重要环节,对于有效发现异常至关重要。以新疆青河县顿巴斯套金矿区1∶1万土壤地球化学测量数据为研究对象,运用含量-面积分形模型确定单元素异常下限,通过对区内各元素异常点赋值、构建元素复杂程度指标并绘制元素复杂程度图。分别对4处元素复杂程度较高的地区进行了找矿潜力评价。结合异常特征及野外地质路线调查,在工作区共圈定了2处找矿靶区并确定Ⅰ号找矿靶区的成矿有利程度较高。经探矿工程验证,在Ⅰ号综合异常区西侧TC1探槽中新揭露出3条矿体,表明该方法在成矿预测过程中具有一定的合理性,并为下一步探矿工程部署提供了依据。Abstract: Geochemical anomaly studying is one of the important problems of geochemical exploration and is crucial for effective abnormal.In this paper,the authors make a study on the soil geochemistry measurement data of 1∶10 000 from Dunbasitao gold mine,and calculate the anomaly lower thresholds of elements by content-area fractal model.Then the authors build complexity of the element metrics to draw the complexity of the elements map by assigning each element abnormal points,and make an evaluation of oreprospecting potential for the four high value area of complexity of the elements.According to geological features in combination with complexity of the elements analyzed,two major target areas for further prospecting are selected andⅠore-prospecting area is confirmed mineralization favorable area.Three ore bodies are exposed in west ofⅠore-prospecting area and provide a basis for further prospecting,suggesting that the method is also suitable in metallogenic prediction.
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